"Bottom-up" meets "top-down" assembly in nanoscale polyoxometalate clusters: self-assembly of [P4W52O178](24-) and disassembly to [P3W39O134](19-).
The pH-controlled assembly/disassembly of a nanoscale {P4W52O178}24- cluster at pH 2 to a {P4W44O152}20- cluster at pH 3-5 via a {P3W39O134}19- cluster species at pH 2-3 to finally give {P2W19O69(OH2)}14- at pH 6 is reported. This process can be traced in the solid state crystallographically and in solution using dynamic light scattering studies.
Pradeep
Chullikkattil P
CP
WestCHEM, Department of Chemistry, The University of Glasgow, Glasgow G12 8QQ, UK.
Long
De-Liang
DL
Streb
Carsten
C
Cronin
Leroy
L
D000838:Anions / Q000737:chemistry; D018360:Crystallography, X-Ray; D006863:Hydrogen-Ion Concentration; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D017553:Phosphorus Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010772:Phosphotungstic Acid / Q000138:chemical synthesis / Q000737:chemistry; D017973:Tungsten Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D000099294:Polyoxometalates
D000838:Anions; D017553:Phosphorus Compounds; D010772:Phosphotungstic Acid; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates; C045951:tungstate